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c++: fixes for old compilers

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On the CI with GCC 6:

    examples/c++/calc++/parser.cc:845:5: error: 'ptrdiff_t' was not declared in this scope
         ptrdiff_t yycount = 0;
         ^~~~~~~~~
    examples/c++/calc++/parser.cc:845:5: note: suggested alternatives:
    /usr/include/x86_64-linux-gnu/c++/6/bits/c++config.h:202:28: note:   'std::ptrdiff_t'
       typedef __PTRDIFF_TYPE__ ptrdiff_t;
                                ^~~~~~~~~

* data/skeletons/lalr1.cc: Qualify ptrdiff_t and size_t with std::.
This commit is contained in:
Akim Demaille
2019-10-02 22:04:59 +02:00
parent d96fff6115
commit 5df33278b4
2 changed files with 14 additions and 14 deletions
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12
data/skeletons/lalr1.cc
View File

@@ -1155,7 +1155,7 @@ b4_dollar_popdef])[]dnl
#if ]b4_api_PREFIX[DEBUG
YYCDEBUG << "LAC: checking lookahead " << yytname_[yytoken] << ':';
#endif
ptrdiff_t lac_top = 0;
std::ptrdiff_t lac_top = 0;
while (true)
{
state_type top_state = (yylac_stack_.empty ()
@@ -1194,12 +1194,12 @@ b4_dollar_popdef])[]dnl
YYCDEBUG << " R" << yyrule - 1;
// Pop the corresponding number of values from the stack.
{
ptrdiff_t yylen = yyr2_[yyrule];
std::ptrdiff_t yylen = yyr2_[yyrule];
// First pop from the LAC stack as many tokens as possible.
ptrdiff_t lac_size = (ptrdiff_t) yylac_stack_.size ();
std::ptrdiff_t lac_size = (std::ptrdiff_t) yylac_stack_.size ();
if (yylen < lac_size)
{
yylac_stack_.resize ((size_t) (lac_size - yylen));
yylac_stack_.resize ((std::size_t) (lac_size - yylen));
yylen = 0;
}
else if (lac_size)
@@ -1292,7 +1292,7 @@ b4_error_verbose_if([state_type yystate, const symbol_type& yyla],
{]b4_error_verbose_if([[
// Number of reported tokens (one for the "unexpected", one per
// "expected").
ptrdiff_t yycount = 0;
std::ptrdiff_t yycount = 0;
// Its maximum.
enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
// Arguments of yyformat.
@@ -1387,7 +1387,7 @@ b4_error_verbose_if([state_type yystate, const symbol_type& yyla],
std::string yyres;
// Argument number.
ptrdiff_t yyi = 0;
std::ptrdiff_t yyi = 0;
for (char const* yyp = yyformat; *yyp; ++yyp)
if (yyp[0] == '%' && yyp[1] == 's' && yyi < yycount)
{

16
data/skeletons/stack.hh
View File

@@ -49,7 +49,7 @@ m4_define([b4_stack_define],
return seq_[size () - 1 - i];
}
T&
operator[] (ptrdiff_t i)
operator[] (std::ptrdiff_t i)
{
return operator[] (size_type (i));
}
@@ -68,7 +68,7 @@ m4_define([b4_stack_define],
return seq_[size () - 1 - i];
}
const T&
operator[] (ptrdiff_t i) const
operator[] (std::ptrdiff_t i) const
{
return operator[] (size_type (i));
}
@@ -90,7 +90,7 @@ m4_define([b4_stack_define],
/// Pop elements from the stack.
void
pop (ptrdiff_t n = 1) YY_NOEXCEPT
pop (std::ptrdiff_t n = 1) YY_NOEXCEPT
{
for (; 0 < n; --n)
seq_.pop_back ();
@@ -109,10 +109,10 @@ m4_define([b4_stack_define],
{
return seq_.size ();
}
ptrdiff_t
std::ptrdiff_t
ssize () const YY_NOEXCEPT
{
return (ptrdiff_t) size ();
return (std::ptrdiff_t) size ();
}
/// Iterator on top of the stack (going downwards).
@@ -133,20 +133,20 @@ m4_define([b4_stack_define],
class slice
{
public:
slice (const stack& stack, ptrdiff_t range)
slice (const stack& stack, std::ptrdiff_t range)
: stack_ (stack)
, range_ (range)
{}
const T&
operator[] (ptrdiff_t i) const
operator[] (std::ptrdiff_t i) const
{
return stack_[range_ - i];
}
private:
const stack& stack_;
ptrdiff_t range_;
std::ptrdiff_t range_;
};
private: